Although planar heterostructures dominate current solid-state lighting architectures (SSL), 1D nanowires have distinct
and advantageous properties that may eventually enable higher efficiency, longer wavelength, and cheaper devices.
However, in order to fully realize the potential of nanowire-based SSL, several challenges exist in the areas of controlled
nanowire synthesis, nanowire device integration, and understanding and controlling the nanowire electrical, optical, and
thermal properties. Here recent results are reported regarding the aligned growth of GaN and III-nitride core-shell
nanowires, along with extensive results providing insights into the nanowire properties obtained using cutting-edge
structural, electrical, thermal, and optical nanocharacterization techniques. A new top-down fabrication method for
fabricating periodic arrays of GaN nanorods and subsequent nanorod LED fabrication is also presented.